'For me, it almost felt like a real cycle, because I started on that same platform, at the same age that Lily Potter, the youngest daughter of Ginny and Harry, was so it's almost literally like looking back at myself,' she told Total Film Indonesia.

Spoiler alert: Bonnie Wright, whose character Ginny goes on to marry Harry Potter, has spoken about filming the epilogue with their 'children'

'The three kids who played the children were just… they just epitomised all of us, when we were that age, so it was lovely to look back.

'They were so excited on the day - it was a massive dream come true, and they'd been through such a massive process of auditioning.

'I think it was probably the most auditions any person has been through to get a part in a film.'

She continued: 'In the auditioning process Dan and I sat down with different children and talked to them, because obviously the dynamic is incredibly important to try and portray the idea that they are this family unit, that they’ve spent every living moment together, since they were babies in their hands to how they are now,' she said.

'It was challenging to get that warmth with someone you've barely met and some children don't want to get close to someone they don’t know.

'But they understood it was incredibly important to make the scene work, so they were very giving to the situation.'